No not at all Gypsy, Islamically he has to be equal to all wives.You take one on a trip this time, take the other the next.Or have them draw lots like the prophet did. At least she knows here turn is coming next and she is certain he is not cheating on her, she knows where he is and who he is with.That's the difference. i often buy nice dresses and shoes for my wife, she has her tastes and some times may not like what I like, having another wife i would end having to buy more for here since i buy for one I have to buy for the oher too, the other wife may like what that wife does not.